US Bridges

CO RD 76 over Quartz Creek

Fair

Gunnison County, Colorado · 3.4 MI NE of Parlin · Structure no. GUN076-03.40A

Built
1990
35 years old
Condition
Fair
inspected May 2024
Type
Arch - Thru
Wood or Timber
Length
52 ft
1 main span
Daily traffic
499
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD 76 over Quartz Creek is a wood or timber arch - thru carrying CO RD 76 over Quartz Creek in Gunnison County, Colorado. It was built in 1990, so it is 35 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 499 vehicles a day, roughly 2% of them trucks, projected to reach 579 by 2042. The structure is 52 ft (15.8 m) long and 31 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesCO RD 76
CrossesQuartz Creek
Location3.4 MI NE of Parlin
RouteCounty Highway 0
Coordinates38.52216, -106.67022
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span48 ft (14.6 m)
Deck width31 ft (9.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic499 (2022)
Projected traffic579 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 76 over Quartz Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is CO RD 76 over Quartz Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does CO RD 76 over Quartz Creek carry?

About 499 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is CO RD 76 over Quartz Creek?

The structure is 52 ft (15.8 m) long with a longest span of 48 ft (14.6 m) and a deck 31 ft wide.

Who owns CO RD 76 over Quartz Creek?

It is owned by the County Highway Agency.